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research-article

Performance evaluation of the MQL technique with auxiliary cleaning of the grinding wheel in cylindrical grinding of N2711 steel

[+] Author and Article Information
Luis Otavio B S Alves

São Paulo State University (UNESP), School of Engineering, BauruAv. Eng. Luiz Edmundo C. Coube 14-01 - 17033-360 - Vargem Limpa, Bauru - SP, Brazil
lobsalves@gmail.com

Rodrigo S Ruzzi

Federal University of Uberlândia, BrazilAv. João Naves de Ávila, 2121 - 38400-902 - Santa Mônica, Uberlândia - MG, Brazil
rodrigo.ruzzi@ufu.br

Rosemar Batista da Silva

Federal University of Uberlândia, BrazilAv. João Naves de Ávila, 2121 - 38400-902 - Santa Mônica, Uberlândia - MG, Brazil
rosemar.silva@ufu.br

Mark Jackson

Kansas State University, Polytechnic Campus, Kansas, USA2310 - Centennial Road - 67401-8196. Salina, KS. United States
mjjackson@ksu.edu

Gilson Eduardo Tarrento

São Paulo State University (UNESP), School of Engineering, BauruAv. Eng. Luiz Edmundo C. Coube 14-01 - 17033-360 - Vargem Limpa, Bauru - SP, Brazil
gilson@fatecbt.edu.br

Hamilton José de Mello

São Paulo State University (UNESP), School of Engineering, BauruAv. Eng. Luiz Edmundo C. Coube 14-01 - 17033-360 - Vargem Limpa, Bauru - SP, Brazil
hamilton@feb.unesp.br

Paulo Roberto de Aguiar

São Paulo State University (UNESP), School of Engineering, BauruAv. Eng. Luiz Edmundo C. Coube 14-01 - 17033-360 - Vargem Limpa, Bauru - SP, Brazil
aguiarpr@feb.unesp.br

Eduardo Carlos Bianchi

São Paulo State University (UNESP), School of Engineering, BauruAv. Eng. Luiz Edmundo C. Coube 14-01 - 17033-360 - Vargem Limpa, Bauru - SP, Brazil
bianchi@feb.unesp.br

1Corresponding author.

ASME doi:10.1115/1.4037041 History: Received April 02, 2017; Revised June 09, 2017

Abstract

In general high volume of coolant are required because of large amount of heat generated in grinding. On the other hand, environmental impacts and human health problems caused by coolants have been a key issue towards sustainable manufacturing. Thus, is important to seek for strategies to reduce the volume of fluids and their risks as well as guarantee grinding efficiency. A possible solution for this problem is to use the MQL technique with an auxiliary compressed air system to clean the grinding wheel during machining. In this context, this work evaluated the performance of the MQL technique with grinding wheel cleaning in relation to the conventional cooling techniques (flood cooling) during a cylindrical plunge grinding of N2711 steel. N2711 steel is widely employed in manufacturing of molds for plastic injection processes and is one of steels more susceptible to grinding burn. The following output parameters were used to assess the performance: surface roughness, roundness, microhardness, grinding power and grinding wheel wear. The results showed that the MQL technique provided superior workpiece quality and lower power consumed compared to the flood technique. The MQL technique proved to be an alternative method compared to the conventional technique under the conditions investigated. Also, Malkin's model was used to predict the grinding ratio (G-ratio) based on experimental data obtained in this work. After regression analysis, the model predicted the G-ratio from the specific material removal rate and the cutting speed with a satisfactory accuracy of approximately 92%.

Copyright (c) 2017 by ASME
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